Pass ignoreComments: false to htmlDiffer

[qfox]

We should disable this option (enabled by default) because it's a kind of #define true false;.
And for those who need it we can make possible to revert it via option passed to tmpl-specs in .enb/make.js.

[blond]

Should we add an htmlDiffer option which will override bem preset?

examples.configure({
    destPath: 'desktop.tmpl-specs',
    levels: ['blocks'],
    htmlDiffer: {
        ignoreComments: false
    },
    /* ... */
});

[qfox]

I'd say yes. ignoreComments shouldn't be enabled by default imho.

[eGavr]

Using this format as @andrewblond proposed, we'll be able to redefine any option we want ;)

[blond]

Added doc for htmlDiffer option: f983f60

[blond]

Release v0.10.0.